#import <HealthKit/HealthKit.h>
@property (nonatomic,strong)HKHealthStore *healthStore;
@property (nonatomic,strong)UILabel *stepLabel;
- (void)viewDidLoad {
[superviewDidLoad];
//查看healthKit在设备上是否可用，ipad不支持HealthKit
if(![HKHealthStoreisHealthDataAvailable])
{
NSLog(@"设备不支持healthKit");
}
//创建healthStore实例对象
self.healthStore = [[HKHealthStorealloc]init];
//设置需要获取的权限这里仅设置了步数
HKObjectType *stepCount = [HKObjectTypequantityTypeForIdentifier:HKQuantityTypeIdentifierStepCount];
NSSet *healthSet = [NSSetsetWithObjects:stepCount,nil];
//从健康应用中获取权限
[self.healthStorerequestAuthorizationToShareTypes:nilreadTypes:healthSetcompletion:^(BOOL success,NSError *_Nullable error) {
if (success)
{
NSLog(@"获取步数权限成功");
[selfreadStepCount];
}
else
{
NSLog(@"获取步数权限失败");
}
}];
}
- (void)readStepCount
{
// NSCalendar *calendar = [NSCalendar currentCalendar];
// NSDate *now = [NSDate date];//现在时间转换成UTC时间
// NSDateComponents *components = [calendar components:NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay fromDate:now];
// NSDate *startDate = [calendar dateFromComponents:components];//今天零点转换成UTC时间 2016-07-04 16:00:00 +0000
// NSLog(@"%@",startDate);
//NSDate *endDate = [calendar dateByAddingUnit:NSCalendarUnitDay value:1 toDate:startDate options:0];
//NSLog(@"%@",endDate);
NSDateFormatter *df = [[NSDateFormatteralloc]init];
df.dateFormat =@"yyyy/MM/dd HH:mm:ss";
NSDate *fromDate = [dfdateFromString:@"2016/07/06 13:42:00"];
NSDate *toDate = [dfdateFromString:@"2016/07/06 13:42:59"];
// NSDate* fromDate = [[NSDate alloc] initWithTimeIntervalSinceNow: -60];//距现在时间一分钟之前(NSTimeInterval)
// NSDate* toDate = [[NSDate alloc] init];//现在时间 [NSDate date];//现在时间转换成UTC时间
// NSCalendar* chineseClendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
// NSUInteger unitFlags =
// NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond | NSCalendarUnitDay | NSCalendarUnitMonth | NSCalendarUnitYear;//252
// NSDateComponents *cps = [chineseClendar components:unitFlags fromDate:startDate2 toDate:toDate options:0];
// NSInteger diffHour = [cps hour];
// NSInteger diffMin = [cps minute];
// NSInteger diffSec = [cps second];
// NSInteger diffDay = [cps day];
// NSInteger diffMon = [cps month];
// NSInteger diffYear = [cps year];
// NSLog( @" From Now to %@, diff: Years: %ld Months: %ld, Days; %ld, Hours: %ld, Mins:%ld, sec:%ld",
// [toDate description], diffYear, diffMon, diffDay, diffHour, diffMin,diffSec );
//查询的基类是HKQuery，这是一个抽象类，能够实现每一种查询目标
//查询采样信息
HKSampleType *sampleType = [HKQuantityTypequantityTypeForIdentifier:HKQuantityTypeIdentifierStepCount];
// //NSSortDescriptors用来告诉healthStore
// NSSortDescriptor *start = [NSSortDescriptor sortDescriptorWithKey:HKSampleSortIdentifierStartDate ascending:NO];
// NSSortDescriptor *end = [NSSortDescriptor sortDescriptorWithKey:HKSampleSortIdentifierEndDate ascending:NO];
//predicate 使…基于 startDate比 endDate时间更为过去
NSPredicate *predicate = [HKQuerypredicateForSamplesWithStartDate:fromDateendDate:toDateoptions:HKQueryOptionNone];
//limit给1表示查询最近1条的数据 sort将…排序
HKSampleQuery *query = [[HKSampleQueryalloc]initWithSampleType:sampleTypepredicate:predicatelimit:HKObjectQueryNoLimitsortDescriptors:nilresultsHandler:^(HKSampleQuery *query,NSArray *results, NSError *error) {
if (!results) {
NSLog(@"An error occured fetching the user's tracked food. In your app, try to handle this gracefully. The error was: %@.", error);
//abort();
}
dispatch_async(dispatch_get_main_queue(), ^{
//打印查询结果
NSLog(@"resultCount = %lud result = %@",results.count,results);
if (results.count >0) {
int step =0;
for (HKQuantitySample *resultin results) {
//对结果进行单位换算
HKQuantity *quantity = result.quantity;
NSNumber *str = [quantityvalueForKey:@"value"];
int unitStep = [strintValue];
step+=unitStep;
}
self.stepLabel.text = [NSStringstringWithFormat:@"总步数：%d",step];
}
});
}];
[self.healthStoreexecuteQuery:query];
}
fromDate 2016/07/06 13:42:00
toDate 2016/07/06 13:42:59
fromDate~toDate 我称之为采样时间段
41:38—42:27 手机17步数 48：25 添加至健康 我称之为运动时间段1 只进入采样时间段一点
42:06–42:29 手表29步数 43：36 添加至健康 我称之为运动时间段2 完全在采样时间段内
查询数据时回返回 运动时间段1 和 运动时间段2 的数据
可以看出只要某一“运动时间段”的运动范围进入了 “采样时间段”，不需要完全进入，这个“运动时间段”的数据就会被采样走